*{
    margin: 0;
}

body{
    background-color: rgb(45,111,161);
    display: flex;
    justify-content: center;
    align-items: center;
    /*对body设置高度应该是可视高度 v-view*/
    height: 80vh;
    min-width: 1000px;
    color: white;
}
.display-flex{
    display: flex;
}
.align-items-center{
    display: flex;
    align-items: center;
}
.justify-content-between{
    display: flex;
    justify-content: space-between;
}
.justify-content-center{
    display: flex;
    justify-content: center;
}

input[type=submit]{
    background-color: rgb(170,206,233);
    border-radius: 5px;
    padding: 10px 30px;
    margin: 15px;
    border: none;
    color: white;
}
/*子代选择器*/
.background>div:nth-child(1){
    color: #d9e016;
}
.background>div{
    width: 40px;
    height: 30px;
    text-align: justify;
    margin: 0 10px 0 0;
    font-weight: 600;

}
.background>div::after{
    content: "";
   display: inline-block;
    width: 100%;

}
form{
    background-color: rgb(105,170,218) ;
    height: 150px;
    border-radius: 10px;
}

form>div:nth-child(1)>div{
    margin: 15px 0;
}

form>div:nth-child(1){
    padding: 8px;
}
input[type=text]{
     height: 25px;
    margin-left: 10px;
    background-color: rgb(250,255,189);
    border: none;
 }
.text-right{
    text-align: right;
}
/*.border-gray{*/
/*    border: 2px solid grey;*/
/*}*/
.width-300{
    width: 300px;
}
.width-400{
    width: 400px;
}
.width-150{
    width: 150px;
}
.width-60{
    width: 60px;
}
.height-200{
    height: 200px;
}
.height-300{
    height: 300px;
}
.height-400{
    height: 400px;
}
